syntax.c 4.75 KB
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/* syntax.c - routines to manage syntax definitions */
/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
 *
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 * Copyright 1998-2005 The OpenLDAP Foundation.
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 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted only as authorized by the OpenLDAP
 * Public License.
 *
 * A copy of this license is available in the file LICENSE in the
 * top-level directory of the distribution or, alternatively, at
 * <http://www.OpenLDAP.org/license.html>.
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 */

#include "portable.h"

#include <stdio.h>

#include <ac/ctype.h>
#include <ac/string.h>
#include <ac/socket.h>

#include "slap.h"

struct sindexrec {
	char		*sir_name;
	Syntax		*sir_syn;
};

static Avlnode	*syn_index = NULL;
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static LDAP_SLIST_HEAD(SyntaxList, slap_syntax) syn_list
	= LDAP_SLIST_HEAD_INITIALIZER(&syn_list);
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static int
syn_index_cmp(
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	const void *v_sir1,
	const void *v_sir2
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)
{
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	const struct sindexrec *sir1 = v_sir1, *sir2 = v_sir2;
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	return (strcmp( sir1->sir_name, sir2->sir_name ));
}

static int
syn_index_name_cmp(
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	const void *name,
	const void *sir
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)
{
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	return (strcmp( name, ((const struct sindexrec *)sir)->sir_name ));
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}

Syntax *
syn_find( const char *synname )
{
	struct sindexrec	*sir = NULL;

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	if ( (sir = avl_find( syn_index, synname, syn_index_name_cmp )) != NULL ) {
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		return( sir->sir_syn );
	}
	return( NULL );
}

Syntax *
syn_find_desc( const char *syndesc, int *len )
{
	Syntax		*synp;

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	LDAP_SLIST_FOREACH(synp, &syn_list, ssyn_next) {
		if ((*len = dscompare( synp->ssyn_syn.syn_desc, syndesc, '{' /*'}'*/ ))) {
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			return synp;
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		}
	}
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	return( NULL );
}

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void
syn_destroy( void )
{
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	Syntax *s;
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	avl_free(syn_index, ldap_memfree);
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	while( !LDAP_SLIST_EMPTY(&syn_list) ) {
		s = LDAP_SLIST_FIRST(&syn_list);
		LDAP_SLIST_REMOVE_HEAD(&syn_list, ssyn_next);
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		ldap_syntax_free((LDAPSyntax *)s);
	}
}

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static int
syn_insert(
    Syntax		*ssyn,
    const char		**err
)
{
	struct sindexrec	*sir;

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	LDAP_SLIST_NEXT( ssyn, ssyn_next ) = NULL;
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	LDAP_SLIST_INSERT_HEAD( &syn_list, ssyn, ssyn_next );
 
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	if ( ssyn->ssyn_oid ) {
		sir = (struct sindexrec *)
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			SLAP_CALLOC( 1, sizeof(struct sindexrec) );
		if( sir == NULL ) {
			Debug( LDAP_DEBUG_ANY, "SLAP_CALLOC Error\n", 0, 0, 0 );
			return LDAP_OTHER;
		}
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		sir->sir_name = ssyn->ssyn_oid;
		sir->sir_syn = ssyn;
		if ( avl_insert( &syn_index, (caddr_t) sir,
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		                 syn_index_cmp, avl_dup_error ) ) {
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			*err = ssyn->ssyn_oid;
			ldap_memfree(sir);
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			return SLAP_SCHERR_SYN_DUP;
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		}
		/* FIX: temporal consistency check */
		syn_find(sir->sir_name);
	}
	return 0;
}

int
syn_add(
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    LDAPSyntax		*syn,
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    slap_syntax_defs_rec *def,
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    const char		**err
)
{
	Syntax		*ssyn;
	int		code;

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	ssyn = (Syntax *) SLAP_CALLOC( 1, sizeof(Syntax) );
	if( ssyn == NULL ) {
		Debug( LDAP_DEBUG_ANY, "SLAP_CALLOC Error\n", 0, 0, 0 );
		return LDAP_OTHER;
	}
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	AC_MEMCPY( &ssyn->ssyn_syn, syn, sizeof(LDAPSyntax) );
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	LDAP_SLIST_NEXT(ssyn,ssyn_next) = NULL;
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	/*
	 * note: ssyn_bvoid uses the same memory of ssyn_syn.syn_oid;
	 * ssyn_oidlen is #defined as ssyn_bvoid.bv_len
	 */
	ssyn->ssyn_bvoid.bv_val = ssyn->ssyn_syn.syn_oid;
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	ssyn->ssyn_oidlen = strlen(syn->syn_oid);
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	ssyn->ssyn_flags = def->sd_flags;
	ssyn->ssyn_validate = def->sd_validate;
	ssyn->ssyn_pretty = def->sd_pretty;
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#ifdef SLAPD_BINARY_CONVERSION
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	ssyn->ssyn_ber2str = def->sd_ber2str;
	ssyn->ssyn_str2ber = def->sd_str2ber;
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#endif
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	code = syn_insert(ssyn, err);
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	return code;
}

int
register_syntax(
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	slap_syntax_defs_rec *def )
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{
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	LDAPSyntax	*syn;
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	int		code;
	const char	*err;

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	syn = ldap_str2syntax( def->sd_desc, &code, &err, LDAP_SCHEMA_ALLOW_ALL);
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	if ( !syn ) {
		Debug( LDAP_DEBUG_ANY, "Error in register_syntax: %s before %s in %s\n",
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		    ldap_scherr2str(code), err, def->sd_desc );
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		return( -1 );
	}

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	code = syn_add( syn, def, &err );
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	if ( code ) {
		Debug( LDAP_DEBUG_ANY, "Error in register_syntax: %s %s in %s\n",
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		    scherr2str(code), err, def->sd_desc );
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		ldap_syntax_free( syn );
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		return( -1 );
	}

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	ldap_memfree( syn );

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	return( 0 );
}

int
syn_schema_info( Entry *e )
{
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	AttributeDescription *ad_ldapSyntaxes = slap_schema.si_ad_ldapSyntaxes;
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	Syntax		*syn;
	struct berval	val;
	struct berval	nval;
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	LDAP_SLIST_FOREACH(syn, &syn_list, ssyn_next ) {
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		if ( ! syn->ssyn_validate ) {
			/* skip syntaxes without validators */
			continue;
		}
		if ( syn->ssyn_flags & SLAP_SYNTAX_HIDE ) {
			/* hide syntaxes */
			continue;
		}

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		if ( ldap_syntax2bv( &syn->ssyn_syn, &val ) == NULL ) {
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			return -1;
		}
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#if 0
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		Debug( LDAP_DEBUG_TRACE, "Merging syn [%ld] %s\n",
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	       (long) val.bv_len, val.bv_val, 0 );
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#endif
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		nval.bv_val = syn->ssyn_oid;
		nval.bv_len = strlen(syn->ssyn_oid);

		if( attr_merge_one( e, ad_ldapSyntaxes, &val, &nval ) )
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		{
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			return -1;
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		}
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		ldap_memfree( val.bv_val );
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	}
	return 0;
}